OK, revising this post after reading through your introduction. What you're describing with "whole health wellness" demands a tremendous amount of prospect education. That means generating and publishing a tremendous amount of content.
FWIW, that seems far too much for a one person shop getting started. You would need a strong team of content writers, editors and distributors to have that kind of impact. All of which takes time and resources.
Dog training: I've seen a handful of established biz models for dog training. Everything from 1 on 1 session, multiple sessions onsite at the family home, group sessions conducted in a neutral environment, drop the dog off with the trainer for several weeks. The last often comes up with atypical issues or intense dedicated training like sheep herding.
Let me add two more to your miracles list.
Diet & Health: Commercial dog food is a joke. It makes the ultra processed crap that's available for people seem like high quality food. We started feeding our dogs home prepared whole food ages ago. It helps that it's basically the same diet we eat ourselves. Just a reduced subset of our food.
Cancer Recover #1: Our 1st Lab Zeus had osteochondrasarcoma which is bone cancer growth typically on the limbs. In that case, the medical answer is amputations In Zeus's case, it was in the skull and growing internally which are both *very* rare conditions. HIs brain had compressed 50% which caused neurologic problems. It was slowly growing over months or possibly years.
I found a surgeon who managed to remove a giant chunk of his skull and replace it with an acrylic plastic without killing him. Minor miracle. It was written up in a number of vet journals. Afterwards, we switched him to a whole food diet along with a bunch of cancer supporting supplements and medicinal mushrooms.
It was three years of perfect health before it eventually recurred. The bone cancer was extensive enough the first time that the vet couldn't safely remove everything with enough margin. We'd already had one miracle and I didn't want to risk having a brain damaged pet, so we decided to let him go.
Cancer Recover #2: Our second Lab Beau had fatal liver disease that dumped him suddenly into the ER. Probably from ingesting toxins, but we'll never know. After four days of watching them slowly kill him, I pulled him out against their wishes and switched to the same diet and meds.
Full recovery followed by four years of perfect health before it recurred. Then about a year of various DIY treatments with lots of ups and downs.
Summary: With all that said, I'd repeat the first sentiment and encourage you to focus on a single area and expand from there. Get one service and one marketing channel working effectively. Dog training, nutrition counseling, therapy, wellness are all giant categories. It's tough (read damn near impossible) to get any traction swimming in all those ponds.
If you can settle on one and show some success, the next logical step is training additional people to provide similar services. Those will likely come from former clients or people in related fields (e.g. dog walking) that want a better income opportunity. That's your expansion opportunity along with publishing, speaking gigs, stuff like that.